forked from GNUsocial/gnu-social
595 lines
19 KiB
PHP
595 lines
19 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Class for doing OAuth authentication against Twitter
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category TwitterauthorizationAction
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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require_once INSTALLDIR . '/plugins/TwitterBridge/twitter.php';
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/**
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* Class for doing OAuth authentication against Twitter
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*
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* Peforms the OAuth "dance" between StatusNet and Twitter -- requests a token,
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* authorizes it, and exchanges it for an access token. It also creates a link
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* (Foreign_link) between the StatusNet user and Twitter user and stores the
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* access token and secret in the link.
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*
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* @category Twitter
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* @package StatusNet
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* @author Zach Copley <zach@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://laconi.ca/
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*
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*/
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class TwitterauthorizationAction extends Action
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{
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var $twuid = null;
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var $tw_fields = null;
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var $access_token = null;
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var $signin = null;
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/**
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* Initialize class members. Looks for 'oauth_token' parameter.
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*
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* @param array $args misc. arguments
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*
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* @return boolean true
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*/
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function prepare($args)
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{
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parent::prepare($args);
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$this->signin = $this->boolean('signin');
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$this->oauth_token = $this->arg('oauth_token');
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return true;
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}
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/**
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* Handler method
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*
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* @param array $args is ignored since it's now passed in in prepare()
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*
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* @return nothing
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*/
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function handle($args)
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{
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parent::handle($args);
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if (common_logged_in()) {
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$user = common_current_user();
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$flink = Foreign_link::getByUserID($user->id, TWITTER_SERVICE);
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// If there's already a foreign link record, it means we already
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// have an access token, and this is unecessary. So go back.
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if (isset($flink)) {
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common_redirect(common_local_url('twittersettings'));
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}
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}
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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// User was not logged in to StatusNet before
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$this->twuid = $this->trimmed('twuid');
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$this->tw_fields = array('screen_name' => $this->trimmed('tw_fields_screen_name'),
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'fullname' => $this->trimmed('tw_fields_fullname'));
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$this->access_token = new OAuthToken($this->trimmed('access_token_key'), $this->trimmed('access_token_secret'));
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$token = $this->trimmed('token');
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if (!$token || $token != common_session_token()) {
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$this->showForm(_('There was a problem with your session token. Try again, please.'));
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return;
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}
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if ($this->arg('create')) {
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if (!$this->boolean('license')) {
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$this->showForm(_('You can\'t register if you don\'t agree to the license.'),
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$this->trimmed('newname'));
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return;
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}
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$this->createNewUser();
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} else if ($this->arg('connect')) {
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$this->connectNewUser();
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} else {
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common_debug('Twitter Connect Plugin - ' .
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print_r($this->args, true));
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$this->showForm(_('Something weird happened.'),
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$this->trimmed('newname'));
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}
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} else {
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// $this->oauth_token is only populated once Twitter authorizes our
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// request token. If it's empty we're at the beginning of the auth
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// process
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if (empty($this->oauth_token)) {
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$this->authorizeRequestToken();
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} else {
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$this->saveAccessToken();
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}
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}
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}
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/**
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* Asks Twitter for a request token, and then redirects to Twitter
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* to authorize it.
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*
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* @return nothing
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*/
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function authorizeRequestToken()
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{
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try {
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// Get a new request token and authorize it
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$client = new TwitterOAuthClient();
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$req_tok =
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$client->getRequestToken(TwitterOAuthClient::$requestTokenURL);
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// Sock the request token away in the session temporarily
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$_SESSION['twitter_request_token'] = $req_tok->key;
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$_SESSION['twitter_request_token_secret'] = $req_tok->secret;
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$auth_link = $client->getAuthorizeLink($req_tok, $this->signin);
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} catch (OAuthClientException $e) {
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$msg = sprintf('OAuth client cURL error - code: %1s, msg: %2s',
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$e->getCode(), $e->getMessage());
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$this->serverError(_m('Couldn\'t link your Twitter account.'));
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}
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common_redirect($auth_link);
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}
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/**
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* Called when Twitter returns an authorized request token. Exchanges
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* it for an access token and stores it.
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*
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* @return nothing
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*/
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function saveAccessToken()
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{
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// Check to make sure Twitter returned the same request
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// token we sent them
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if ($_SESSION['twitter_request_token'] != $this->oauth_token) {
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$this->serverError(_m('Couldn\'t link your Twitter account.'));
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}
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$twitter_user = null;
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try {
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$client = new TwitterOAuthClient($_SESSION['twitter_request_token'],
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$_SESSION['twitter_request_token_secret']);
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// Exchange the request token for an access token
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$atok = $client->getAccessToken(TwitterOAuthClient::$accessTokenURL);
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// Test the access token and get the user's Twitter info
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$client = new TwitterOAuthClient($atok->key, $atok->secret);
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$twitter_user = $client->verifyCredentials();
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} catch (OAuthClientException $e) {
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$msg = sprintf('OAuth client error - code: %1$s, msg: %2$s',
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$e->getCode(), $e->getMessage());
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$this->serverError(_m('Couldn\'t link your Twitter account.'));
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}
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if (common_logged_in()) {
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// Save the access token and Twitter user info
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$user = common_current_user();
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$this->saveForeignLink($user->id, $twitter_user->id, $atok);
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save_twitter_user($twitter_user->id, $twitter_user->name);
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} else {
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$this->twuid = $twitter_user->id;
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$this->tw_fields = array("screen_name" => $twitter_user->screen_name,
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"name" => $twitter_user->name);
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$this->access_token = $atok;
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$this->tryLogin();
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}
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// Clean up the the mess we made in the session
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unset($_SESSION['twitter_request_token']);
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unset($_SESSION['twitter_request_token_secret']);
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if (common_logged_in()) {
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common_redirect(common_local_url('twittersettings'));
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}
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}
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/**
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* Saves a Foreign_link between Twitter user and local user,
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* which includes the access token and secret.
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*
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* @param int $user_id StatusNet user ID
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* @param int $twuid Twitter user ID
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* @param OAuthToken $token the access token to save
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*
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* @return nothing
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*/
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function saveForeignLink($user_id, $twuid, $access_token)
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{
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$flink = new Foreign_link();
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$flink->user_id = $user_id;
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$flink->foreign_id = $twuid;
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$flink->service = TWITTER_SERVICE;
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$creds = TwitterOAuthClient::packToken($access_token);
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$flink->credentials = $creds;
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$flink->created = common_sql_now();
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// Defaults: noticesync on, everything else off
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$flink->set_flags(true, false, false, false);
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$flink_id = $flink->insert();
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if (empty($flink_id)) {
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common_log_db_error($flink, 'INSERT', __FILE__);
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$this->serverError(_('Couldn\'t link your Twitter account.'));
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}
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return $flink_id;
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}
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function showPageNotice()
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{
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if ($this->error) {
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$this->element('div', array('class' => 'error'), $this->error);
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} else {
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$this->element('div', 'instructions',
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sprintf(_('This is the first time you\'ve logged into %s so we must connect your Twitter account to a local account. You can either create a new account, or connect with your existing account, if you have one.'), common_config('site', 'name')));
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}
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}
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function title()
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{
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return _('Twitter Account Setup');
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}
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function showForm($error=null, $username=null)
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{
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$this->error = $error;
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$this->username = $username;
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$this->showPage();
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}
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function showPage()
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{
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parent::showPage();
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}
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function showContent()
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{
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if (!empty($this->message_text)) {
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$this->element('p', null, $this->message);
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return;
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}
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$this->elementStart('form', array('method' => 'post',
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'id' => 'form_settings_twitter_connect',
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'class' => 'form_settings',
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'action' => common_local_url('twitterauthorization')));
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$this->elementStart('fieldset', array('id' => 'settings_twitter_connect_options'));
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$this->element('legend', null, _('Connection options'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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$this->element('input', array('type' => 'checkbox',
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'id' => 'license',
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'class' => 'checkbox',
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'name' => 'license',
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'value' => 'true'));
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$this->elementStart('label', array('class' => 'checkbox', 'for' => 'license'));
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$this->text(_('My text and files are available under '));
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$this->element('a', array('href' => common_config('license', 'url')),
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common_config('license', 'title'));
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$this->text(_(' except this private data: password, email address, IM address, phone number.'));
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$this->elementEnd('label');
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->hidden('access_token_key', $this->access_token->key);
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$this->hidden('access_token_secret', $this->access_token->secret);
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$this->hidden('twuid', $this->twuid);
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$this->hidden('tw_fields_screen_name', $this->tw_fields['screen_name']);
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$this->hidden('tw_fields_name', $this->tw_fields['name']);
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$this->elementStart('fieldset');
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$this->hidden('token', common_session_token());
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$this->element('legend', null,
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_('Create new account'));
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$this->element('p', null,
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_('Create a new user with this nickname.'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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$this->input('newname', _('New nickname'),
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($this->username) ? $this->username : '',
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_('1-64 lowercase letters or numbers, no punctuation or spaces'));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->submit('create', _('Create'));
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$this->elementEnd('fieldset');
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$this->elementStart('fieldset');
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$this->element('legend', null,
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_('Connect existing account'));
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$this->element('p', null,
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_('If you already have an account, login with your username and password to connect it to your Twitter account.'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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$this->input('nickname', _('Existing nickname'));
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$this->elementEnd('li');
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$this->elementStart('li');
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$this->password('password', _('Password'));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->submit('connect', _('Connect'));
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$this->elementEnd('fieldset');
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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}
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function message($msg)
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{
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$this->message_text = $msg;
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$this->showPage();
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}
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function createNewUser()
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{
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if (common_config('site', 'closed')) {
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$this->clientError(_('Registration not allowed.'));
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return;
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}
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$invite = null;
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if (common_config('site', 'inviteonly')) {
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$code = $_SESSION['invitecode'];
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if (empty($code)) {
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$this->clientError(_('Registration not allowed.'));
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return;
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}
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$invite = Invitation::staticGet($code);
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if (empty($invite)) {
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$this->clientError(_('Not a valid invitation code.'));
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return;
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}
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}
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$nickname = $this->trimmed('newname');
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if (!Validate::string($nickname, array('min_length' => 1,
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'max_length' => 64,
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'format' => NICKNAME_FMT))) {
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$this->showForm(_('Nickname must have only lowercase letters and numbers and no spaces.'));
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return;
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}
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if (!User::allowed_nickname($nickname)) {
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$this->showForm(_('Nickname not allowed.'));
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return;
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}
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if (User::staticGet('nickname', $nickname)) {
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$this->showForm(_('Nickname already in use. Try another one.'));
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return;
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}
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$fullname = trim($this->tw_fields['name']);
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$args = array('nickname' => $nickname, 'fullname' => $fullname);
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if (!empty($invite)) {
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$args['code'] = $invite->code;
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}
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$user = User::register($args);
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$result = $this->saveForeignLink($user->id,
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$this->twuid,
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$this->access_token);
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save_twitter_user($this->twuid, $this->tw_fields['screen_name']);
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if (!$result) {
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$this->serverError(_('Error connecting user to Twitter.'));
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return;
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}
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common_set_user($user);
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common_real_login(true);
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common_debug('TwitterBridge Plugin - ' .
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"Registered new user $user->id from Twitter user $this->twuid");
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common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)),
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303);
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}
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function connectNewUser()
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{
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$nickname = $this->trimmed('nickname');
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$password = $this->trimmed('password');
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if (!common_check_user($nickname, $password)) {
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$this->showForm(_('Invalid username or password.'));
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return;
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}
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$user = User::staticGet('nickname', $nickname);
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if (!empty($user)) {
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common_debug('TwitterBridge Plugin - ' .
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"Legit user to connect to Twitter: $nickname");
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}
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$result = $this->saveForeignLink($user->id,
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$this->twuid,
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$this->access_token);
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save_twitter_user($this->twuid, $this->tw_fields['screen_name']);
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if (!$result) {
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$this->serverError(_('Error connecting user to Twitter.'));
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return;
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}
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common_debug('TwitterBridge Plugin - ' .
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"Connected Twitter user $this->twuid to local user $user->id");
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common_set_user($user);
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common_real_login(true);
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$this->goHome($user->nickname);
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}
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function connectUser()
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{
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$user = common_current_user();
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$result = $this->flinkUser($user->id, $this->twuid);
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if (empty($result)) {
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$this->serverError(_('Error connecting user to Twitter.'));
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return;
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}
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common_debug('TwitterBridge Plugin - ' .
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"Connected Twitter user $this->twuid to local user $user->id");
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// Return to Twitter connection settings tab
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common_redirect(common_local_url('twittersettings'), 303);
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}
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function tryLogin()
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{
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common_debug('TwitterBridge Plugin - ' .
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"Trying login for Twitter user $this->twuid.");
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$flink = Foreign_link::getByForeignID($this->twuid,
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TWITTER_SERVICE);
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if (!empty($flink)) {
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$user = $flink->getUser();
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if (!empty($user)) {
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common_debug('TwitterBridge Plugin - ' .
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"Logged in Twitter user $flink->foreign_id as user $user->id ($user->nickname)");
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common_set_user($user);
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common_real_login(true);
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$this->goHome($user->nickname);
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}
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} else {
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common_debug('TwitterBridge Plugin - ' .
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"No flink found for twuid: $this->twuid - new user");
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$this->showForm(null, $this->bestNewNickname());
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}
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}
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function goHome($nickname)
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{
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$url = common_get_returnto();
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if ($url) {
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// We don't have to return to it again
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common_set_returnto(null);
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} else {
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$url = common_local_url('all',
|
|
array('nickname' =>
|
|
$nickname));
|
|
}
|
|
|
|
common_redirect($url, 303);
|
|
}
|
|
|
|
function bestNewNickname()
|
|
{
|
|
if (!empty($this->tw_fields['name'])) {
|
|
$nickname = $this->nicknamize($this->tw_fields['name']);
|
|
if ($this->isNewNickname($nickname)) {
|
|
return $nickname;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
// Given a string, try to make it work as a nickname
|
|
|
|
function nicknamize($str)
|
|
{
|
|
$str = preg_replace('/\W/', '', $str);
|
|
$str = str_replace(array('-', '_'), '', $str);
|
|
return strtolower($str);
|
|
}
|
|
|
|
function isNewNickname($str)
|
|
{
|
|
if (!Validate::string($str, array('min_length' => 1,
|
|
'max_length' => 64,
|
|
'format' => NICKNAME_FMT))) {
|
|
return false;
|
|
}
|
|
if (!User::allowed_nickname($str)) {
|
|
return false;
|
|
}
|
|
if (User::staticGet('nickname', $str)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|